Troubleshooting by Remote Controller Si20-701_B
107
3.13
AF
Drain Level above Limit
Remote Controller Display
AF
Applicable Models
FMCQ, FMDQ
Method of Error Detection
Water leakage is detected based on float switch ON/OFF
operation while the compressor is in non-operation.
Error Decision Conditions
When the float switch changes from ON to OFF while the
compressor is in non-operation.
Supposed Causes
îš„ Humidifier unit (optional accessory) leaking
îš„ Defective drain pipe (upward slope, etc.)
îš„ Defective indoor unit PCB
Troubleshooting
YES
NO
Field
drain piping
has a defect such as
upward sloping.
Modify the drain
piping.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
YES
A
humidifier
unit (optional
accessory) is installed
on the indoor
unit.
Check if the
humidifier unit is
leaking.
Replace the
indoor unit PCB.
NO
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